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  • Squeezing and rubbing...

Squeezing and rubbing of eyelids substantially increases IOP in glaucoma patients: BMJ

Written by Jacinthlyn Sylvia Published On 2022-06-22T09:15:34+05:30  |  Updated On 22 Jun 2022 9:59 AM GMT
Squeezing and rubbing of eyelids substantially increases IOP in glaucoma patients: BMJ
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Germany: Eyelid maneuvers (especially substantial with squeezing and rubbing) caused transient elevations in intraocular pressure (IOP) in individuals with primary open-angle glaucoma (POAG), says an article published in the British Journal of Ophthalmology.Patients with glaucoma who are using topical glaucoma medication frequently have dry eye symptoms and are thus more inclined to touch...

Germany: Eyelid maneuvers (especially substantial with squeezing and rubbing) caused transient elevations in intraocular pressure (IOP) in individuals with primary open-angle glaucoma (POAG), says an article published in the British Journal of Ophthalmology.

Patients with glaucoma who are using topical glaucoma medication frequently have dry eye symptoms and are thus more inclined to touch or pinch their eyelids. In this work, Jacqueline J O N van den Bosch and colleagues telemetrically measured peak intraocular pressure (IOP) during eyelid motions and eyelid rubbing.

As a baseline measurement, 11 patients with primary open-angle glaucoma who had previously been implanted with a telemetric IOP sensor (Eyemate-IO) were told to stare straight ahead for 1 minute. Following that, 6 cycles of blinking on command with 10 s intervals were conducted. In addition, 5 rounds of eyelid closure (n=9), squeezing (n=7), and rubbing (n=7) were conducted at 15 s intervals. IOP was measured using an external antenna that was wrapped around the subject's eye. One-sample t-tests were used to compare average peak IOP changes from baseline to zero (no change).

The key findings of this study were as follows:

1. The average peak IOP rise (mean±SEM) from baseline for eyelid rubbing was 59.1±9.6 mm Hg.

2. Eyelid squeezing was 42.2±5.8 mm Hg, eyelid closure was 3.8±0.6 mm Hg, and voluntary blinking was 11.6±2.4 mm Hg.

3. During involuntary blinking, there was no change in IOP except for a brief irregularity in the ocular pulse.

Both eyelids rubbing and squeezing induced IOP rise exceeding 40 mm Hg, voluntary blinking elicited a 12 mm Hg increase and eyelid closing elicited a short spike of 4 mm Hg followed by a persistent reduction. "More research is needed to determine if IOP rise caused by squeezing and rubbing contributes to glaucoma," quoted the PI in conclusion.

Reference:

van den Bosch, J. J. O. N., Pennisi, V., Mansouri, K., Weinreb, R. N., Thieme, H., Hoffmann, M. B., & Choritz, L. (2022). Effect of eyelid muscle action and rubbing on telemetrically obtained intraocular pressure in patients with glaucoma with an IOP sensor implant. In British Journal of Ophthalmology (p. bjophthalmol-2021-320508). BMJ. https://doi.org/10.1136/bjophthalmol-2021-320508

intraocular pressureprimary open-angle glaucomaBritish Journal of Ophthalmology
Source : British Journal of Ophthalmology
Jacinthlyn Sylvia
Jacinthlyn Sylvia

    Neuroscience Masters graduate

    Jacinthlyn Sylvia, a Neuroscience Master's graduate from Chennai has worked extensively in deciphering the neurobiology of cognition and motor control in aging. She also has spread-out exposure to Neurosurgery from her Bachelor’s. She is currently involved in active Neuro-Oncology research. She is an upcoming neuroscientist with a fiery passion for writing. Her news cover at Medical Dialogues feature recent discoveries and updates from the healthcare and biomedical research fields. She can be reached at editorial@medicaldialogues.in

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